Abstract

Teaching about energy in interdisciplinary settings that emphasize coherence among physics, chemistry, and biology leads to a more central role for chemical bond energy. We argue that an interdisciplinary approach to chemical energy leads to modeling chemical bonds in terms of negative energy. While recent work on ontological metaphors for energy has emphasized the affordances of the substance ontology, this ontology is problematic in the context of negative energy. Instead, we apply a dynamic ontologies perspective to argue that blending the substance and location ontologies for energy can be effective in reasoning about negative energy in the context of reasoning about chemical bonds. We present data from an introductory physics for the life sciences (IPLS) course in which both experts and students successfully use this blended ontology. Blending these ontologies is most successful when the substance and location ontologies are combined such that each is strategically utilized in reasoning about particular aspects of energetic processes.

Highlights

  • Energy is a central concept in physics, chemistry, and biology, and has been widely promoted [1] as a way to connect physics and chemistry to biology

  • We argue below that one element of building this interdisciplinary coherence around chemical energy is reasoning about negative energy

  • IV, we argue that the exclusive use of the substance metaphor for energy is untenable for an interdisciplinary context that relies on negative energy, and present examples of the productive use of a blended substance and location ontology

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Summary

INTRODUCTION

Energy is a central concept in physics, chemistry, and biology, and has been widely promoted [1] as a way to connect physics and chemistry to biology. Introductory physics courses that seek deeper interdisciplinary coherence with chemistry and biology are integrating chemical energy into their treatment of energy [5]. We draw on an ontological metaphor perspective to suggest why this concept is difficult, and use a dynamic ontologies model to illustrate ways that experts and students can reason productively about negative energy. V, the case studies provide new directions for refinement of the theory

Ontologies and conceptual metaphors in physics education
Ontological metaphors for energy
INTERDISCIPLINARITY AND NEGATIVE ENERGY
Theoretical argument
Empirical proof of concept
The kinesin task
Phillip’s group
Peter’s group
IMPLICATIONS AND FUTURE DIRECTIONS
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